34 
THE LICHEN-FLORA OF GREAT RRITAIN, &C. 
usually within certain fixed limits. The perfection to which modern 
microscopes have been brought, renders the process of measurement 
comparatively easy. In the work before us the late Mr. Mudd’s 
measurements by the fractions of an inch are quoted, but these will 
require careful comparison with those of Nylander, Fries, jun., and 
the author's own. It is much to be regretted that English workers 
do not adopt the millimetre in preference to the inch, as it is univer- 
sally used on the Continent, and takes up less room when written. It 
is impossible, in a brief notice such as our space confines us to here, 
to point out all the valuable features of this work, but we may say, 
in conclusion, that references are given under each species to pub- 
lished figures of it, and to exsiccati in which it occurs ; its geogra- 
phical distribution, with the localities where it has been found, and 
the names of those who have found it are specified. Chemical 
reactions are indicated by fixed symbols, explained fully in the intro- 
duction. A glossary of terms used, together with a copious index, 
render this work as complete as can be desired, and we wish it every 
possible success. 
UNDESCRIBED FUNGI IN THE KEW HERBARIUM. 
By M. C. Cooke. 
Ustilago australis. Clce. 
Sporis atris, in germenibus enatis, subglobosis vel angulatis et 
difformibus, laevibus. (’OOB-'OOQ mm. diam.). 
In ovaries of Eriacline. Australia. (Muller.) 
Professor Fischer de Waldheim is of opinion that this is clearly 
distinct from any described species, and not a Tilletia, which in habit 
it resembles. 
Fuccinia sclerotioidea. Che. 
Amphigena. Soris atro-purpureis, epidermide cinctis, compactis, 
durissimis. Pseudosporis clavatis, constrictis, laete brunneis, epis- 
porio supra incrassato (*045 x *015 mm.). Pedicellis persistentibus, • 
hyalinis. 
On leaves (probably some Statice ). British Columbia. (Dr. 
Lyell.) 
Fuccinia Barbareee. CJce. 
Gregaria, amphigena. Soris rotundatis, atris, epidermide cinctis. 
Pseudosporis late lanceolatis, forte constrictis, laete brunneis, laevi- 
bus ( - 05 x ’016 mm.), episporio supra incrassatis. Pedicellis hya- 
linis, subpersistentibus. 
In company with JEcidium barbarece, D.C., on cruciferous plant. 
Oregon. (Dr. Lyall, 61.) 
Corynelia tripos. Cke. 
Coespitoso-gregaria, insidens stromate lineari convexo-nigro. 
Peritheciis atris, supra attenuatis, dein apice incrassato-truncatis. 
